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Heart|Lab Grown|IGI

1.51ct E IF Heart Lab Grown Diamond

ID • E/IF • IGI LG811645844

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG811645844

Diamond specifications and retailer prices

From $907 NZD
$511 USD
As of November 1, 2026
Save $2,851 NZD (76%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $3,758 NZD at Brilliance · As of November 1, 2026
View at Brilliance

About this 1.51ct lab-grown heart diamond

This 1.51ct lab-grown heart sits in the one-and-a-half to two carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG811645844 or 811645844. Listed at 10 retailers as of November 1, 2026, with prices from $907 to $3,758, a $2,851 spread on the same certified stone. Brilliance lists it at $3,758. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle37.5°
Pavilion angle39.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG811645844
Dimensions7.70 × 7.20 × 4.68 mm
L/W Ratio1.07
Girdle conditionFaceted
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
7.70 mm7.20 mm1.51 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG811645844
Side View
Table 58.0%Crown 37.5°Girdle: MED-THKPavilion 39.4°Culet: NoneDepth 60.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $3,758 NZD|Low: $907 NZD|High: $4,113 NZD|Avg: $2,257 NZD|-8.6%
Brilliance
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 10$907 NZD
Retailer 7$1,348 NZD
Retailer 4$1,579 NZD
Retailer 3$1,663 NZD
Retailer 2$1,732 NZD
Retailer 8$1,900 NZD
Retailer 6$2,700 NZD
Retailer 9$3,284 NZD
Retailer 5$3,709 NZD
Brilliance$3,758 NZD

41 data points across 10 retailers

10 retailers$907 NZD to $3,758 NZD

A
Cheapest Retailer
-
$907 NZD
$511 USD
Final sale: no returns
A
Retailer 2
-
$1,348 NZD
$760 USD
View
A
Retailer 3
-
$1,579 NZD
$890 USD
View
A
Retailer 4
-
$1,663 NZD
£738 GBP
View
A
Retailer 5
-
$1,732 NZD
ZAR 15,771 ZAR
View
A
Retailer 6
-
$1,900 NZD
$1,071 USD
View
B
Retailer 7
-
$2,700 NZD
$1,522 USD
View
B+
Retailer 8
-
$3,284 NZD
$1,851 USD
View
B
Retailer 9
-
$3,709 NZD
£1,646 GBP
View
Most Expensive
B
Brilliance
D44758911 · Nov 1
$3,758 NZD
$2,118 USD
View
9 more retailers have this diamond
Prices start from $907 NZDSave up to $2,851 NZD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
1.51ct Heart
$907 NZD